Flash Furniture, BL-8801X-GG, Executive Swivel Chair, 39" - 41" adjustable height, 250 lb. weight capacity, mid-back design, transparent mesh back, transparent mesh waterfall seat, built-in lumbar support, 2-to-1 locking synchro tilt adjustments, tilt tension adjustment knob, pneumatic seat height adjustment, padded flip-up arms, heavy duty melrose fold nylon base, dual wheel casters, black (in stock items usually ship within 24 hours)